import React, { Component } from 'react'
import PropTypes from 'prop-types'
import Item from '../Item'
import './index.css'

export default class List extends Component {

  //对接收的props进行限制：类型、必要性
  static propTypes = {
    updateTodo: PropTypes.func.isRequired,
    deleteTodo: PropTypes.func.isRequired,
    todos:PropTypes.array.isRequired
  }

  render () {
    const { todos,updateTodo,deleteTodo } = this.props;

    return (
      <ul className="todo-main">
        {
          todos.map(todo => {
            return <Item key={todo.id} {...todo} updateTodo={updateTodo} deleteTodo={deleteTodo }/>
          })
        }
      </ul>
    )
  } 
}
